Hi Rick!
I see you've been researching PFC Thomas S. Durham who died on January 11th 1945. I know this topic is very old, but I've recently completed a research about Willard G. Meek who was also in A Company, 312th Engineer Bn. Durham and Meek both died with 22 other soldiers in an explosion in Libramont on January 11th. The story is quiet unknown and we've only recently found the case of death. Just like you and other people we though Meek was killed near Tillet, but it was so strange that there was no explicit mention of the date in the unit histories. I published an article on my own blog about The darkest day of A company, 312th Eng Bn, Jan 11 1945 http://www.joedemadio.com/darkest-day-of-a-company-january-11th-1945
I hope you're finally able to finish the Find-A-Grave bio on PFC Thomas S. Durham
Joey